Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it
meets all of the requirements for effectiveness of this Amendment to the Registration Statement under Rule 485(b) under the Securities Act of 1933 and has duly caused this Amendment to the Registration Statement to be signed on its behalf by the
undersigned, duly authorized, in the City of Boston, and The Commonwealth of Massachusetts on the 10th day of October, 2013.

John Hancock Municipal Securities Trust

By:

/s/ Hugh McHaffie

Name:

Hugh McHaffie

Title:

President

Pursuant to the requirements of the Securities Act of 1933, this Amendment to the Registration Statement has been signed below by the following persons in
the capacities and on the date indicated.

Signature

Title

Date

/s/ Hugh McHaffie

President

October 10, 2013

Hugh McHaffie

/s/ Charles A. Rizzo

Chief Financial Officer

October 10, 2013

Charles A. Rizzo

(Principal Financial Officer and Principal Accounting Officer)

/s/ Charles L. Bardelis *

Trustee

October 10, 2013

Charles L. Bardelis

/s/ James R. Boyle *

Trustee

October 10, 2013

James R. Boyle

/s/ Craig Bromley *

Trustee

October 10, 2013

Craig Bromley

/s/ Peter S. Burgess *

Trustee

October 10, 2013

Peter S. Burgess

/s/ William H. Cunningham *

Trustee

October 10, 2013

William H. Cunningham

/s/ Grace K. Fey *

Trustee

October 10, 2013

Grace K. Fey

/s/ Theron S. Hoffman *

Trustee

October 10, 2013

Theron S. Hoffman

/s/ Deborah C. Jackson *

Trustee

October 10, 2013

Deborah C. Jackson

/s/ Hassell H. McClellan *

Trustee

October 10, 2013

Hassell H. McClellan

/s/ James M. Oates *

Trustee

October 10, 2013

James M. Oates

/s/ Steven R. Pruchansky *

Trustee

October 10, 2013

Steven R. Pruchansky

/s/ Gregory A. Russo *

Trustee

October 10, 2013

Gregory A. Russo

/s/ Warren A. Thomson *

Trustee

October 10, 2013

Warren A. Thomson

*By: Power of Attorney

By:

/s/ Nicholas J. Kolokithas

October 10, 2013

Nicholas J. KolokithasAttorney-in-Fact

*Pursuant to Power of Attorney filed with Post-Effective Amendment No. 40 to the Trust’s Registration Statement on September 26, 2013

Exhibit Index

EX-101.INS

XBRL Instance Document

EX-101.SCH

XBRL Taxonomy Extension Schema Document

EX-101.CAL

XBRL Taxonomy Extension Calculation Linkbase Document

EX-101.LAB

XBRL Taxonomy Extension Labels Linkbase Document

EX-101.PRE

XBRL Taxonomy Extension Presentation Linkbase Document

EX-101.DEF

XBRL Taxonomy Extension Definition Linkbase Document

EX-101.INS
2
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<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
Investment objective
</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">To seek a high level of current income that is largely exempt from federal income tax, consistent with the preservation of capital.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
Fees and expenses
</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">This table describes the fees and expenses you may pay if you buy and hold shares of the fund. You may qualify for sales charge discounts on Class A shares if you and your family invest, or agree to invest in the future, at least $100,000 in the John Hancock family of funds. More information about these and other discounts is available on pages 15 to 17 of the prospectus under &quot;Sales charge reductions and waivers&quot; or pages 125 to 128 of the fund's statement of additional information under &quot;Initial Sales Charge on Class A Shares.&quot;</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Shareholder fees (fees paid directly from your investment)</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>
Annual fund operating expenses (%) (expenses that you pay each year as a percentage of the value of your investment) </b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
Expense example
</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. Please see below a hypothetical example showing the expenses of a $10,000 investment in the fund for the time periods indicated (Kept column) and then assuming a redemption of all of your shares at the end of those periods (Sold column). The example assumes a 5% average annual return. The example assumes fund expenses will not change over the periods. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</p>
<b>Sold</b> <b> Kept </b>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
Portfolio turnover
</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The fund pays transaction costs, such as commissions, when it buys and sells securities (or &quot;turns over&quot; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund's performance. During its most recent fiscal year, the fund's portfolio turnover rate was 25% of the average value of its portfolio.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
Principal investment strategies
</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">Under normal market conditions, the fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in municipal bonds. Normally, the fund's investment subadvisor will primarily invest in medium and lower quality municipal securities, those rated, at time of purchase, A and below by Moody's Investors Service, Inc. (Moody's), Standard &amp; Poor's Ratings Services (S&amp;P), and Fitch Ratings (Fitch), or their unrated equivalents. However, the fund will limit its investments in securities rated lower than B to no more than 5% of its total assets at time of purchase. Bonds that are rated at or below BB by S&amp;P or Fitch or Ba by Moody's are considered junk bonds. Municipal bonds may be subject to alternative minimum tax (AMT) and income may not be entirely tax-free to all investors.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The fund may buy bonds of any maturity. If a bond's credit rating rises or falls, the fund does not have to sell it unless the subadvisor determines a sale is in the fund's best interest. Accordingly, the fund may, for periods of time, hold a lower percentage of qualifying securities. While the percentage of qualifying securities held is below 80%, the fund will only purchase qualifying securities.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The fund is non-diversified and may invest more than 5% of its net assets in securities of any given issuer. The fund may invest heavily in bonds from any given state or region. The fund may engage in derivative transactions that include futures contracts on debt securities and debt securities indexes; options on futures, debt securities, and debt indexes; and inverse floating-rate securities, in each case, for the purposes of reducing risk and/or enhancing investment returns.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The subadvisor looks for bonds that are undervalued, based on both broad and security-specific factors, such as issuer creditworthiness, bond structure, general credit trends, and the relative attractiveness of different types of issuers. The subadvisor uses detailed analysis of an appropriate index to model portfolio performance and composition, then blends the macro assessment with security analysis in a comprehensive and disciplined fashion. The fund does not intend to use frequent trading as part of its strategy.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">In general, the subadvisor favors bonds backed by revenue from a specific public project or facility, such as a power plant (revenue bonds), as they tend to offer higher yields than general obligation bonds. The subadvisor also favors bonds that have limitations on being paid off early (call protection), as this can help minimize the effect that falling interest rates may have on the fund's yield. To the extent that the fund invests in bonds that are subject to the AMT, the income paid by the fund may not be entirely tax-free to all investors.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
Principal risks
</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The fund's shares will go up and down in price, meaning that you could lose money by investing in the fund. Many factors influence a mutual fund's performance.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">Instability in the financial markets has led many governments, including the U.S. government, to take a number of unprecedented actions designed to support certain financial institutions and segments of the financial markets that have experienced extreme volatility and, in some cases, a lack of liquidity. Federal, state, and other governments, and their regulatory agencies or self-regulatory organizations, may take actions that affect the regulation of the instruments in which the fund invests, or the issuers of such instruments, in ways that are unforeseeable. Legislation or regulation may also change the way in which the fund itself is regulated. Such legislation or regulation could limit or preclude the fund's ability to achieve its investment objective.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">Governments or their agencies may also acquire distressed assets from financial institutions and acquire ownership interests in those institutions. The implications of government ownership and disposition of these assets are unclear, and such a program may have positive or negative effects on the liquidity, valuation, and performance of the fund's portfolio holdings. Furthermore, volatile financial markets can expose the fund to greater market and liquidity risk and potential difficulty in valuing portfolio instruments held by the fund.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The fund's main risk factors are listed below in alphabetical order. <i>Before investing, be sure to read the additional descriptions of these risks beginning on page 6 of the prospectus</i>.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Active management risk.</b> The subadvisor's investment strategy may fail to produce the intended result.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Changing distribution levels risk.</b> The distribution amounts paid by the fund generally depend on the amount of income and/or dividends paid by the fund's investments.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Credit and counterparty risk.</b> The issuer or guarantor of a fixed-income security, the counterparty to an over-the-counter derivatives contract, or a borrower of a fund's securities may be unable or unwilling to make timely principal, interest, or settlement payments, or otherwise honor its obligations. U.S. government securities are subject to varying degrees of credit risk depending upon the nature of their support. Funds that invest in fixed-income securities are subject to varying degrees of risk that the issuers of the securities will have their credit rating downgraded or will default, potentially reducing a fund's share price and income level.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Economic and market events risk.</b> Events in the financial markets have resulted, and may continue to result, in an unusually high degree of volatility in the financial markets, both domestic and foreign. In addition, reduced liquidity in credit and fixed-income markets may adversely affect issuers worldwide.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Fixed-income securities risk.</b> Fixed-income securities are affected by changes in interest rates and credit quality. A rise in interest rates typically causes bond prices to fall. The longer the average maturity or average duration of the bonds held by the fund, the more sensitive the fund is likely to be to interest-rate changes. There is the possibility that the issuer of the security will not repay all or a portion of the principal borrowed and will not make all interest payments.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Hedging, derivatives, and other strategic transactions risk.</b> Hedging and other strategic transactions may increase the volatility of a fund and, if the transaction is not successful, could result in a significant loss to a fund. The use of derivative instruments could produce disproportionate gains or losses, more than the principal amount invested. Investing in derivative instruments involves risks different from, or possibly greater than, the risks associated with investing directly in securities and other traditional investments and, in a down market, could become harder to value or sell at a fair price. The following is a list of certain derivatives and other strategic transactions in which the fund intends to invest and the main risks associated with each of them:</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Futures contracts.</b> Counterparty risk, liquidity risk (i.e., the inability to enter into closing transactions), and risk of disproportionate loss are the principal risks of engaging in transactions involving futures contracts. Counterparty risk does not apply to exchange-traded futures.
</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Inverse floating-rate securities.</b> Liquidity risk (i.e., the inability to enter into closing transactions), interest-rate risk, issuer risk, and risk of disproportionate loss are the principal risks of engaging in transactions involving inverse floating-rate securities.
</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Options.</b> Counterparty risk, liquidity risk (i.e., the inability to enter into closing transactions), and risk of disproportionate loss are the principal risks of engaging in transactions involving options. Counterparty risk does not apply to exchange-traded options.
</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Lower-rated fixed-income securities risk and high-yield securities risk.</b> Lower-rated fixed-income securities and high-yield fixed-income securities (commonly known as junk bonds) are subject to greater credit quality risk and risk of default than higher-rated fixed-income securities. These securities may be considered speculative and the value of these securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Municipal bond risk.</b> Municipal bond prices can decline due to fiscal mismanagement or tax shortfalls. Revenue bond prices can decline if related projects become unprofitable.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The fund may hold bonds that are insured as to principal and interest payments. Because the value of an insured municipal bond depends in part on the claims-paying ability of the insurer, the fund would be subject to the risk that the insurer may be unable to pay claims filed pursuant to the coverage. The fund may hold several investments covered by one insurer, which would increase the fund's exposure to the claims-paying ability of that insurer. In addition, insurance does not guarantee the market value of the insured obligation. Income from municipal bonds held by the fund could become taxable because of changes in tax laws or interpretations by taxing authorities, or noncompliant conduct of a municipal issuer. Values of municipal bonds could be adversely affected by changes in tax rates that make tax-exempt returns less attractive.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Non-diversified risk.</b> Overall risk can be reduced by investing in securities from a diversified pool of issuers and is increased by investing in securities of a small number of issuers. Investments in a non-diversified fund may magnify the fund's losses from adverse events affecting a particular issuer.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Sector investing risk.</b> Because the fund may focus on a single sector of the economy, its performance depends in large part on the performance of that sector. As a result, the value of your investment may fluctuate more widely than it would in a fund that is diversified across sectors.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>State/region risk.</b> Investing heavily in any one state or region increases exposure to losses in securities of that state's or region's issuers.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
Past performance
</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The following performance information in the bar chart and table below illustrates the variability of the fund's returns and provides some indication of the risks of investing in the fund by showing changes in the fund's performance from year to year. However, past performance (before and after taxes) does not indicate future results. All figures assume dividend reinvestment. Performance for the fund is updated daily, monthly, and quarterly and may be obtained at our website: www.jhinvestments.com/FundPerformance, or by calling 800-225-5291, Monday–Thursday, between 8:00 A.M. and 7:00 P.M., and on Fridays between 8:00 A.M. and 6:00 P.M., Eastern time.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Calendar year total returns.</b> These do not include sales charges and would have been lower if they did. Calendar year total returns are shown only for Class A shares and would be different for other share classes.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Average annual total returns.</b> Performance of a broad-based market index is included for comparison.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>After-tax returns.</b> These are shown only for Class A shares and would be different for other classes. They reflect the highest individual federal marginal income-tax rates in effect as of the date provided and do not reflect any state or local taxes. Your actual after-tax returns may be different. After-tax returns are not relevant to shares held in an IRA, 401(k), or other tax-advantaged investment plan.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Barclays High Yield Municipal Bond Index</b> is an unmanaged index composed of municipal bonds that are non-investment grade, unrated, or rated below BBB/Baa.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Barclays Municipal Bond Index</b> is an unmanaged index representative of the tax-exempt bond market.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
<b>Calendar year total returns—Class A</b> (%)
</b></p>
Year-to-date total return. The fund's total return for the six months ended June 30, 2013, was -3.20%Best quarter: Q3 '09, 11.22%Worst quarter: Q4 '08, -10.74%<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Average annual total returns (%) as of 12-31-12 </b></p>
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<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
Investment objective
</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">To seek as high a level of interest income exempt from federal income tax as is consistent with preservation of capital.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
Fees and expenses
</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">This table describes the fees and expenses you may pay if you buy and hold shares of the fund. You may qualify for sales charge discounts on Class A shares if you and your family invest, or agree to invest in the future, at least $100,000 in the John Hancock family of funds. More information about these and other discounts is available on pages 15 to 17 of the prospectus under &quot;Sales charge reductions and waivers&quot; or pages 125 to 128 of the fund's statement of additional information under &quot;Initial Sales Charge on Class A Shares.&quot;</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Shareholder fees (fees paid directly from your investment)</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"> <b>
Annual fund operating expenses (%) (expenses that you pay each year as a percentage of the value of your investment) </b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
Expense example
</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. Please see below a hypothetical example showing the expenses of a $10,000 investment in the fund for the time periods indicated (Kept column) and then assuming a redemption of all of your shares at the end of those periods (Sold column). The example assumes a 5% average annual return. The example assumes fund expenses will not change over the periods. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
Portfolio turnover
</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The fund pays transaction costs, such as commissions, when it buys and sells securities (or &quot;turns over&quot; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund's performance. During its most recent fiscal year, the fund's portfolio turnover rate was 11% of the average value of its portfolio.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
Principal investment strategies
</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">Under normal market conditions, the fund invests at least 80% of its net assets, plus amounts borrowed for investment purposes, in tax-exempt bonds of any maturity. Most of these bonds are investment grade when purchased, but the fund may also invest up to 35% of its net assets in junk bonds rated BB or B by Standard &amp; Poor's Ratings Services (S&amp;P) or Fitch Ratings (Fitch) or Ba or B by Moody's Investors Service, Inc. (Moody's) or their unrated equivalents. Bonds that are rated at or below BB by S&amp;P or Fitch or Ba by Moody's are considered junk bonds.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The fund may buy bonds of any maturity. If a bond's credit rating falls, the fund does not have to sell it unless the subadvisor determines a sale is in the fund's best interest. The fund may invest heavily in bonds from any given state or region. The fund may engage in derivative transactions that include futures contracts on debt securities and debt securities indexes; options on futures, debt securities, and debt indexes; and inverse floating-rate securities, in each case, for the purposes of reducing risk and/or enhancing investment returns.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The subadvisor looks for bonds that are undervalued, based on both broad and security-specific factors, such as issuer creditworthiness, bond structure, general credit trends, and the relative attractiveness of different types of issuers. The subadvisor uses detailed analysis of an appropriate index to model portfolio performance and composition, then blends the macro assessment with security analysis in a comprehensive and disciplined fashion. The fund does not intend to use frequent trading as part of its strategy.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">In general, the subadvisor favors bonds backed by revenue from a specific public project or facility, such as a power plant (revenue bonds), as they tend to offer higher yields than general obligation bonds. The subadvisor also favors bonds that have limitations on being paid off early (call protection), as this can help minimize the effect that falling interest rates may have on the fund's yield. To the extent that the fund invests in bonds that are subject to the alternative minimum tax (AMT), the income paid by the fund may not be entirely tax-free to all investors. Investments in bonds subject to the AMT will not be counted toward the fund's 80% investment policy.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
Principal risks
</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The fund's shares will go up and down in price, meaning that you could lose money by investing in the fund. Many factors influence a mutual fund's performance.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">Instability in the financial markets has led many governments, including the U.S. government, to take a number of unprecedented actions designed to support certain financial institutions and segments of the financial markets that have experienced extreme volatility and, in some cases, a lack of liquidity. Federal, state, and other governments, and their regulatory agencies or self-regulatory organizations, may take actions that affect the regulation of the instruments in which the fund invests, or the issuers of such instruments, in ways that are unforeseeable. Legislation or regulation may also change the way in which the fund itself is regulated. Such legislation or regulation could limit or preclude the fund's ability to achieve its investment objective.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">Governments or their agencies may also acquire distressed assets from financial institutions and acquire ownership interests in those institutions. The implications of government ownership and disposition of these assets are unclear, and such a program may have positive or negative effects on the liquidity, valuation, and performance of the fund's portfolio holdings. Furthermore, volatile financial markets can expose the fund to greater market and liquidity risk and potential difficulty in valuing portfolio instruments held by the fund.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The fund's main risk factors are listed below in alphabetical order. <i>Before investing, be sure to read the additional descriptions of these risks beginning on page 6 of the prospectus</i>.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Active management risk.</b> The subadvisor's investment strategy may fail to produce the intended result.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Changing distribution levels risk.</b> The distribution amounts paid by the fund generally depend on the amount of income and/or dividends paid by the fund's investments.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Credit and counterparty risk.</b> The issuer or guarantor of a fixed-income security, the counterparty to an over-the-counter derivatives contract, or a borrower of a fund's securities may be unable or unwilling to make timely principal, interest, or settlement payments, or otherwise honor its obligations. U.S. government securities are subject to varying degrees of credit risk depending upon the nature of their support. Funds that invest in fixed-income securities are subject to varying degrees of risk that the issuers of the securities will have their credit rating downgraded or will default, potentially reducing a fund's share price and income level.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Economic and market events risk.</b> Events in the financial markets have resulted, and may continue to result, in an unusually high degree of volatility in the financial markets, both domestic and foreign. In addition, reduced liquidity in credit and fixed-income markets may adversely affect issuers worldwide.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Fixed-income securities risk.</b> Fixed-income securities are affected by changes in interest rates and credit quality. A rise in interest rates typically causes bond prices to fall. The longer the average maturity or average duration of the bonds held by the fund, the more sensitive the fund is likely to be to interest-rate changes. There is the possibility that the issuer of the security will not repay all or a portion of the principal borrowed and will not make all interest payments.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Hedging, derivatives, and other strategic transactions risk.</b> Hedging and other strategic transactions may increase the volatility of a fund and, if the transaction is not successful, could result in a significant loss to a fund. The use of derivative instruments could produce disproportionate gains or losses, more than the principal amount invested. Investing in derivative instruments involves risks different from, or possibly greater than, the risks associated with investing directly in securities and other traditional investments and, in a down market, could become harder to value or sell at a fair price. The following is a list of certain derivatives and other strategic transactions in which the fund intends to invest and the main risks associated with each of them:</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Futures contracts.</b> Counterparty risk, liquidity risk (i.e., the inability to enter into closing transactions), and risk of disproportionate loss are the principal risks of engaging in transactions involving futures contracts. Counterparty risk does not apply to exchange-traded futures.
</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Inverse floating-rate securities.</b> Liquidity risk (i.e., the inability to enter into closing transactions), interest-rate risk, issuer risk, and risk of disproportionate loss are the principal risks of engaging in transactions involving inverse floating-rate securities.
</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Options.</b> Counterparty risk, liquidity risk (i.e., the inability to enter into closing transactions), and risk of disproportionate loss are the principal risks of engaging in transactions involving options. Counterparty risk does not apply to exchange-traded options.
</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Lower-rated fixed-income securities risk and high-yield securities risk.</b> Lower-rated fixed-income securities and high-yield fixed-income securities (commonly known as junk bonds) are subject to greater credit quality risk and risk of default than higher-rated fixed-income securities. These securities may be considered speculative and the value of these securities can be more volatile due to increased sensitivity to adverse issuer, political, regulatory, market, or economic developments and can be difficult to resell.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Municipal bond risk.</b> Municipal bond prices can decline due to fiscal mismanagement or tax shortfalls. Revenue bond prices can decline if related projects become unprofitable.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The fund may hold bonds that are insured as to principal and interest payments. Because the value of an insured municipal bond depends in part on the claims-paying ability of the insurer, the fund would be subject to the risk that the insurer may be unable to pay claims filed pursuant to the coverage. The fund may hold several investments covered by one insurer, which would increase the fund's exposure to the claims-paying ability of that insurer. In addition, insurance does not guarantee the market value of the insured obligation. Income from municipal bonds held by the fund could become taxable because of changes in tax laws or interpretations by taxing authorities, or noncompliant conduct of a municipal issuer. Values of municipal bonds could be adversely affected by changes in tax rates that make tax-exempt returns less attractive.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Sector investing risk.</b> Because the fund may focus on a single sector of the economy, its performance depends in large part on the performance of that sector. As a result, the value of your investment may fluctuate more widely than it would in a fund that is diversified across sectors.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>State/region risk.</b> Investing heavily in any one state or region increases exposure to losses in securities of that state's or region's issuers.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
Past performance
</b></p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">The following performance information in the bar chart and table below illustrates the variability of the fund's returns and provides some indication of the risks of investing in the fund by showing changes in the fund's performance from year to year. However, past performance (before and after taxes) does not indicate future results. All figures assume dividend reinvestment. Performance for the fund is updated daily, monthly, and quarterly and may be obtained at our website: www.jhinvestments.com/FundPerformance, or by calling 800-225-5291, Monday–Thursday, between 8:00 A.M. and 7:00 P.M., and on Fridays between 8:00 A.M. and 6:00 P.M., Eastern time.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Calendar year total returns.</b> These do not include sales charges and would have been lower if they did. Calendar year total returns are shown only for Class A shares and would be different for other share classes.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Average annual total returns.</b> Performance of a broad-based market index is included for comparison.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>After-tax returns.</b> These are shown only for Class A shares and would be different for other classes. They reflect the highest individual federal marginal income-tax rates in effect as of the date provided and do not reflect any state or local taxes. Your actual after-tax returns may be different. After-tax returns are not relevant to shares held in an IRA, 401(k), or other tax-advantaged investment plan.</p>
<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;"><b>
<b>Calendar year total returns—Class A</b> (%)
</b></p>
Year-to-date total return. The fund's total return for the six months ended June 30, 2013, was -3.88%Best quarter: Q3 '09, 8.15%Worst quarter: Q4 '10, -4.95%<p style="font-size:12;padding-top:2;padding-bottom:0;padding-left:0;">
<b>Average annual total returns (%) as of 12-31-12 </b></p>
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shares if you and your family invest, or agree to invest in the future, at least $100,000 in the John Hancock family of funds. More information about these and other discounts is available on pages 15 to 17 of the prospectus under "Sales charge reductions and waivers" or pages 125 to 128 of the fund's statement of additional information under "Initial Sales Charge on Class A Shares."You may qualify for sales charge discounts on Class A
shares if you and your family invest, or agree to invest in the future, at least $100,000 in the John Hancock family of funds. More information about these and other discounts is available on pages 15 to 17 of the prospectus under "Sales charge reductions and waivers" or pages 125 to 128 of the fund's statement of additional information under "Initial Sales Charge on Class A Shares."1000001000000.252014-09-302014-09-300.11An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.The fund's shares will go up and down in price, meaning that you could lose money by investing in the fund.An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.The fund's shares will go up and down in price, meaning that you could lose money by investing in the fund.Non-diversified risk. Overall risk can be reduced by investing in securities from a diversified pool of issuers and is increased by investing in securities of a small number of issuers. Investments in a non-diversified fund may magnify the fund's losses from adverse events affecting a particular issuer.However, past performance (before and after taxes) does not indicate future results.However, past performance (before and after taxes) does not indicate future results.The following performance information in the bar chart and table below illustrates the variability of the fund's returns and provides some indication of the risks of investing in the fund by showing changes in the fund's performance from year to year.The following performance information in the bar chart and table below illustrates the variability of the fund's returns and provides some indication of the risks of investing in the fund by showing changes in the fund's performance from year to year.Calendar year total returns. These do not include sales charges and would have been lower if they did.Calendar year total returns. These do not include sales charges and would have been lower if they did.Average annual total returns. Performance of a broad-based market index is included for comparison.Average annual total returns. Performance of a broad-based market index is included for comparison.-0.03202013-06-300.11222009-09-30-0.10742008-12-31-0.03882013-06-300.08152009-09-30-0.04952010-12-31<pre>
Year-to-date total return. The fund's total return for the six months ended June 30, 2013, was -3.88%.
Best quarter: Q3 '09, 8.15%
Worst quarter: Q4 '10, -4.95%
</pre><pre>
Year-to-date total return. The fund's total return for the six months ended June 30, 2013, was -3.20%.
Best quarter: Q3 '09, 11.22%
Worst quarter: Q4 '08, -10.74%
</pre>www.jhinvestments.com/FundPerformance800-225-5291www.jhinvestments.com/FundPerformance800-225-5291They reflect the highest individual federal marginal income tax rates in effect as of the date provided and do not reflect any state or local taxes.Your actual after-tax returns may be different. After-tax returns are not relevant to shares held in an IRA, 401(k) or other tax-advantaged investment plan.They reflect the highest individual federal marginal income tax rates in effect as of the date provided and do not reflect any state or local taxes.Your actual after-tax returns may be different. After-tax returns are not relevant to shares held in an IRA, 401(k) or other tax-advantaged investment plan.After-tax returns. These are shown only for Class A shares and would be different for other classes.After-tax returns. These are shown only for Class A shares and would be different for other classes.<b>Sold</b> <b> Kept </b>
Prior to December 14, 2012, the fund compared its performance solely to the Barclays Municipal Bond Index. After this date, the fund added the Barclays High Yield Municipal Bond Index as the primary benchmark index and retained the Barclays Municipal Bond Index as the secondary benchmark index to which the fund compares its performance to better reflect the universe of investment opportunities based on the fund's investment strategy.
(on certain purchases, including those of $1 million or more)
The fund's distributor has contractually agreed to waive 0.10% of Rule 12b-1 fees for Class A, Class B, and Class C shares. The current waiver agreement expires on September 30, 2014, unless renewed by mutual agreement of the fund and the distributor based upon a determination that this is appropriate under the circumstances at that time. Excluding this waiver would result in Rule 12b-1 fees of 0.25% for Class A, 1.00% for Class B, and 1.00% for Class C shares.
The fund's distributor has contractually agreed to waive 0.10% of Rule 12b-1 fees for Class A, Class B, and Class C shares. The current waiver agreement expires on September 30, 2014, unless renewed by mutual agreement of the fund and the distributor based upon a determination that this is appropriate under the circumstances at that time. Excluding this waiver would result in Rule 12b-1 fees of 0.25% for Class A, 1.00% for Class B, and 1.00% for Class C shares.
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